Vorrichtung zur Messung der Masse eines strömenden Mediums

摘要

Prior art devices for measuring the quantity of a flowing medium have an electronic control circuit which evaluates the electric signals from a temperature-dependent sensor unit and is fitted together with the sensor unit in a protective metal casing for protection against incoming electromagnetic waves (EMV protection), which involves considerable complexity and requires a great deal of space. To reduce complexity and the space required, the device of the invention has a protective casing (34) consisting of a metal base housing (35), a metal closure casing (50) and a metal plug-in component (47) providing a pluggable assembly. The plug-in component (47) has a plurality of lead-through capacitors (40) to protect the electrical connecting leads (52) taken through and connected to the electronic control circuit (30) against interference. The device is intended to measure the quantity of a flowing medium, especially that of the intake air in internal combustion engines.